Agriculture machine



Oct. 5, 1937. M. D. DcuGLAss AGRICULTURE MACHINE 5 Sheets-Sheet 1 Filed April 9, 1937 Oct. 5', 1937. M. D. DouGLAss 2,095,182

v AGRICULTURE MACHINE Filed April 9, 1937 5 Sheets-Sheet 2 kmh W u. 6 0 wm. @u 0 E. m m .L.. m

M. D. DOUGLASS AGRICULTURE MACHINE Filed April 9, 1937 5 Sheets-Sheet-I MJ. am MT5 l @aaa/4.55,

Oct. 5, 1.937.

M. D. DouGLAss t AGRICULTURE MACHINE Filed April 9, 1937 5 Sheets-Sheet 4 Oct. 5, .1937.4A Y M. D. DoUGLAss AGRICULTURE MACHINE Filed Apfil 9, 1957 5 Sheets-Sheetf v Buch-HOL WW) M m M C L M Patented Oct. 5, 1937 UNITED STATE AreNT oFFlcE i 1,2 Claims.

This invention relates to an agriculture machine of the self-propelled type.

The invention hasy for its object to provide, in

Aa manner as hereinafter set forth, a machine of l the class referredv to having means respectively for suspending front ground working devices at each side thereof in proximity to its front, one or more ground working devices from its rear substantially in middle or central relation thereto,

1b one or more ground working devices at the rear of one side thereof and one or more ground working4 devices atf the rear of the other side thereof and means respectively whereby the ground working devices at'the front of one side of the 3115 machine may be shifted independently of the ground Working devices "at the front of the other side thereof to and from ground working position and independently of the rear ground working devices, the central rear ground working device shifted independently of all of the other ground working devices toV and' .from ground working and with the front devices on one side capable of` being made active independently of the other of the said devices andV with the front and rear devices on one side capable of being made active in unison independently of the ground working devices on the other side. Further objects of the invention are to provide, in a manner as hereinafter set forth, a self-propelled machine of the class referred to which is strong, durable, thoroughly efficient in its use, enabling for the convenient adjusting of forward and rear ground working devices, providing for the carrying of ground working devices of different forms, capable for the expeditious substitution` of oneformrofrground working device for another, readily controlled and comparatively inexpensive to set up.

'With the foregoing and other objects in view, the invention consists of the novel construction, combination and arrangement of parts as will be more specifically referred to and as illus- 5.5 trated in: the accompanying drawings wherein is shown an embodiment of the invention, but it is vto be understood that changes, variations and' modifications may be resortedV to which fall within the scope of the invention as claimed.

In the drawings:

Figure 1 is a side elevation ofthe machine with one of the rear wheels removed,

Figure 2 is a top plan view thereof,

Figure 3 is a diagrammatic view illustrating the intermediate rear ground working deviceand its 10' elevating and lowering means. The ground working deviceand its elevating and lowering means are shown in active position in full lines and in inactive position or elevated position in dotted lines, 15-

Figure 4 is a View similar to. Figure 3` of the outer rear ground workingv devices, the forward ground working devices andthe elevating and lowering meansffor the said devices. The full line showing ofthe ground working devices indicates 20 their active position. The dotted line showing of certain of the groundl working devices indicates their inactive position,V Y

Figure 5 is a diagrammatic View illustrating the forward and rear ground working devices when elevated in unison from active position,

Figures 6, 7, 8 and 9 are respectively a top plan view, a side elevation, a rear elevation anda section on line 9 9 Figure 7 of the connection between a lift bar'for a ground working' device and a crank arm associated with thel bar,

Figure 10 is a fragmentary view in topl plan illustrating the carrier for the rear ground working devices, Figure 11 is a fragmentary View, partly in sidel 35 elevation and in longitudinal section of the telescopie combined coupler and shifter element for selectively shifting, or in unison, forward and rear ground working means or devices,

Figure 12 is a section online l2--I2;Figuref11,

Figure 1371s a sect-ion on line I3-l3, Figure 11,

Figure 14 is a front elevation of the4 fronti wheels, Y

Figure 15 is av section on line |5,-I5, Figure 2,.

Figure 16.is a section-'onV line Him-I6,l Figure 15,

and

Figure 17 Vis a top plan view of the, structure shown in Figure 15.

The machine includes a propelling means therefor in the form of a tractor lof any suitable type. As Vshown tractor I has its frameA indicated at 2, its rear Wheels at 3, 4, its front Wheels at 5, l',` its differential mechanism at' andl its steering mechanism at 9 which is connected in a suitable manner (not shown)v to a pivoted carrier l0 for the front wheels 5, 6 which are disposed at opposite inward inclinations from top to bottom. The housing II of the differential mechanism is formed with a pair of Oppositely disposed laterally extending tubular extensions I2, I3 for the rear axles I3a which operate a driving means (not shown) for the spindles I4 upon which the rear wheels 3, 4 are mounted. A seat post I4a is fixed to housing II and carries a seat I5.

As shown the machine includes a pair of downwardly inclined spaced rearwardly extending forward beams I6, I1 of like form and of angle contour located adjacent one side of the frame 2 and a pair of downwardly inclined spaced rearwardly extending forward beams I8, I9 of like form and of angle contour located adjacent the other side of frame 2. Each of the beams I6, I1 includes an upstanding upper leg 29 and a horizontally disposed lower leg 2|. The leg 20 extends at a forward inclination from its lower to its upper end. The leg 2| merges at its forward end into the lower end of leg 29. 'I'he legs 20 of the beams I6, I1 are disposed in parallelism. The legs 2I of the beams I6, I1 are Oppositely outwardly inclined. Each of the beams I8, I9 includes an upstanding upper leg 22 and a horizontally disposed lower leg 23. The leg 22 extends at a forward inclination from its lower to its upper end. The leg 23 merges at its forward end into the lower end of leg 22. The legs 22 of beams I8, I9 are disposed in parallelism. The legs 23 of the beams I8, I9 are Oppositely outwardly inclined.

The legs 2|, 23l are adapted to have adjustably secured thereto one or more ground working devices. As shown by way of example, each leg 2I has adjustably secured therewith on its inner side, as at 24 the shank 25 of a single ground working device 26 whichY may be of any suitable form and each leg 23 has adjustably secured thereto, as at 21, 28 the shanks 29, 30 respectively of a pair of ground working devices 3l, 32 respectively of any suitable form. The ground working devices 3 I, 32 on each leg 23 are arranged one in advance of the other and on opposite sides of the leg.

Extending transversely of the lower face of frame 2 in proximity to the forward end of the latter is a tubular bearing 33 of a length to extend from the sides of the frame. The end terminal portions of bearing 33 are mounted in hangers 34 which are anchored to the sides of the frame. The bearing 33 at spaced points intermediate its end is secured with frame'Z by Ythe spaced holdfast means 34a. Extending diametrically of bearing 33, at the transverse median of the latter is a jamb bolt or pin 34h. Journaled in and projecting from the ends of the bearing 33 is a pair of Oppositely extending rock-shafts 35, 36. Oppositely disposed upstanding anchoring members 35a are secured to the forward ends of the outer faces of the sides of frame 2 and formed with outwardly inclined parts 35aL which are provided with superposed notches 36h. The parts 35a extend from frame 2. The outer ends of the shafts 35, 36 are journaled in bearings 36c formed at the rear ends of combined bracing and supporting elements 35d of like form and substantially of frame-like triangular contour. The forward ends of the elements 35d are open. The bearings 36C close the rear ends of elements 36d. These latter extend inwardly at an inclination 36e, 36f having threaded forward end terminal portions 3Bg which extend through the superposed notches 361 of a part 36a and carry a take-up nut 36h and a lock nut 361.

The legs 2D of the beams I6, I1 have their upper ends adjustably secured to spaced split coupling members 31 which are adjustably secured to shaft 36. Fixed to and bodily shifting with shaft 36 is the lower end of an upstanding rearwardly inclined lever 39 which functions to elevate and lower the beams I5, I1 in unison. The lever 39 is of rectangular frame-like contour and has its lower end arranged between the members 31. Carried by the lower ends of the legs 29 of the beams I6, I1 are sectional rearwardly inclined collars 40 having the lower ends of a pair of upstanding lifting bars 4l pivotally connected thereto, as at 42. The sections of each collar are detachably secured together in encompassing relation with respect to a beam by the holdfast means 42a. The bars 4I extend inwardly towards each other at an inclination and have their upper ends pivotally connected to the upper end of lever 39, as at 43. The forward side of lever 3S is provided with a cross piece 44 for a purpose to be referred to.

The legs 22 of the beams I8, I3 have their upper ends adjustably secured to spaced split coupling members 45 which are adjustably connected to the shaft 35. Fixed to and bodily shifting with shaft 35 is the lower end of an upstanding rearwardly inclined lever 41 which functions to elevate and lower the beams I8, I9 in unison. The lever 41 is of rectangular frame-like contour and has its lower end arranged between the members 45. Carried by the lower ends of the legs 22 of the beams I8, I9 are sectional rearwardly inclined collars 48 which are detachably secured in encompassing relation with respect to the beams I8, I9, by the holdfast means 49. Pivotally connected, as at 59 to the collars 48 are the lower ends of a pair of upstanding lifting bars 5I which extend towards each other at an inclination from their lower to their upper ends and have their upper ends pivotally connected to the upper end of lever 41, as at 52. The forward side of lever 41 is provided with a cross piece 53 for a purpose to be referred to.

The machine includes a pair of vertically disposed inverted yokesV 54, 55 which are disposed laterally with respect to opposite sides of the tractor frame 2. The upper portion of the inner side of each yoke is anchored to a side of the tractor frame 2 between the transverse median and rear end of such frame. The yokes 54, 55 are disposed in depending relation with the tractor frame. Y

Anchored to the upper ends of yokes 54, 55 and spaced from tractor frame 2 are the rearwardly extending Oppositely disposed angle beams 56, 51 which are also anchored uponl and extend rearwardly from Ythe tubular extensions I2, I3 of the .differential housing Il. The` outer sides of and adjacent the bottom of the yokes 54, 55 have anchored thereto the forward ends of brace members 53 (only one shown with respect to the yoke .55). The rear ends ofV members 53 are secured as at 59 to the bottoms of the housings 6U for the driving or transmission means for the spindles I 4. The rear end terminal portions of the angle beams are bent downwardly as at 5I (Figure 1).V Secured to the lower face of each of s'aid angle beams is the forward end of a brace member whichV extends under a part of a housing 50 and has an upturned rear end terminal portion which is anchored to the rear end of an angle beam. But one brace member is shown beams 68, `69 and 1.0.

(Figure 1") Vand it is illustrated as set up in'conn'ection with the angle beam 51. The brace member is indicated at 63,`the anchoring means for its .forward end at 64, its upturned rear terminal portion at 65 and the anchoring means between its rear end and the rear end of angle beam 51 at 66. Inclined brace members 66EL (Figure 2) are secured at their lower ends to theinner sides of the yokes 54, 55 and to the sides of the tractor frame 2. Supported by the lower ends of the yokes 54, 55 is a shaft 61 for pivotally supporting the forward ends of a set `of spaced rear Each beam is of angle contour.v The beams 68, are the outer rear Abeams and the beam 69 the center or intermediate rear beam. The beams 68, 10 are oppo- .sitely disposed. The beam 69 is arranged in the same manner as one of the outer rear beams: and is shown by way of example as disposed in the same manner as the beam 10. The beams 68, 69, 10 are formed rof forward legs' 1|, 12, 13 respectively, disposed in lengthwise relation with respect to the tractor I and rear legs 14,VA 15, 16 respectively disposed in transverse relation'with respect to the tractor. The rear legs of the rear beams are disposed at right anglesto the rear ends of the forward legs of such beams and are fof .polygonal contour in vertical section.

The leg` of beam 69 is of less length than either of Vthe legs 10, 16. The rear ends of the legs 1I, 13 1arte-of open flared contour as. lat 11 (Figure 10). The forward ends of the le-gs 1|, 13 are enlarged has an open flared forward end86 to forma twopoint suspension therefor onshaft 61.

The legs 14,15, 16 ofthe beams68, 69, 10 are to have ladjustably connected therewith'one or more Avertically adjustable Y ground working de:-

vices of anyr suitable form. By way of example, 4the leg 14 and the leg 15 have associated therewith the shank 81 of a ground working device 86 adjustably connected to a coupler 69 which isadjustably secured to the leg 14 or 15 andthe leg' 16is to-have associated therewith the Shanks 90 (Figure 10) of a pair of ground working devices 9I adjustably connected to couplers 92 which are'adjustably secured to the leg 16.

I Mounted in the openings 80, 8| are the lower ends of a pair of upstanding lifting bars 93, 94 respectively. The bar 93 is arranged forwardly of bar 94.. Mounted in the openings 62, 83 are the lower ends of a pair of lifting bars 95, 96 respectively. The bar 95 is arranged forwardly of bar 96. Mounted in the openings 84, 85 are the lower ends of a pair of lifting bars 91, 98 respectively. vThe bar 91 is arranged forwardly of the bar 98. The bars 93, 95 and 91 provide for independently lifting the beams 10, 69, 68 respectively relative to each other. The bars'f94, 96 and 90 provide for lifting the `beams 10,-"69, 68 in unison. The elevating and Alowering means for independently llifting `and lowering the beams 68, 69, 10 and the elevating and lowering means for vlifting vthe beams 68, 69, 10 in unison will be presently referred-tdw' y Y (Figure 5) Secured to the angle: beams 56, 51 (Figures 1 .and 2) between their transverse medians and rear ends are vertically disposed semi-circular plates 99, |00 respectively having their curved edges toothed throughout to form racks as at Spring controlled pawl and lever mecha- IOI. nisms |02, I 03 associate with the racks. The levers |04, |05 of said mechanisms are. pivoted at their lower ends to the plates 99, |00 respectively.` The levers |04, |05 have pivotallyf vracks |09. 'I'he levers II2, I I3 of the mechanisms H0, II I are pivotally connected at' their lower ends to the plates |01, |08 respectively. The levers II2, I-I3 have pivotally connected thereto the rearV Vends of forwardly extending shifting arms II4, I|4a for a purpose to be referred to. 'Ihe levers I I2, I I3 have formed integral therewith rearwardly extending crank arms II5, |I6 (Figure 5) for a purpose to be referred to. Secured on the to-p of differential housing II is an upstanding semi-circular plate II1 having its circular edge toothed throughout to forma rack as at II8. A spring controlled pawl and lever mechanism II9 associates with the rack II8. The

ed atV its lower end to the plate |I1 and has formed integral therewith a rearwardly extending crank arm I 2| (Figure 5) for a purpose to be referred to.

The crank arms H5, H6, i2! have laterally disposed eyesi22, |23 and |24 (Figure 5) respectively at..their rear ends. The lifting bars 95, 91, 93 have their upper ends extended through the eyes |22, |23, |24 respectively. v'The bars 95, 91, 93 carry xed abutment collars |25, |26, |21 respectively above the crank arms II5, IE6, |2I. When the crank arms are elevated the collars coact with the arms whereby the bars are lifted.

The depending rear terminal portions 6I of the angle beams 54, carry bearings in which-is revolubly mounted a shaft |30 to the ends of which are secured rearwardly extending inverted T-shaped lift members I3I, |32 and between its transverse median and one of its ends the shaft A |30 is provided with a rearwardly extending inverted T-shaped member |33. The rear ends of members I3I, |32, |33 are formed with vertical eyes |34, |35, |36 respectively through which extend the upper terminal portions of'lift bars 96,

98, 94 respectively. The upper ends of rods 96, 98, 94 respectively have xed thereto collars |31, |36, |39 respectively which constitute abutments arranged above the eyes on the rear ends of members I3I, |32, |33. When shaft |30 is moved in a direction, by a means to be referred to, to elevate the rear ends of the lift members, the lift bars 96, 99, 94 will be carried upwardly together and elevate in unison the rear ends of the beams 68, 69, 10 to shift the ground working devices carried by these latter clear of the ground. When the rear ends of the beams 68, 69, 10 are elevated in unison, therear ends of the beams I6, I1, I8 and I9 are elevated in unison with `the rear ends of the other beams and the-ground workingV devices 'carried by the'bearns I6, I1, I8 and- I9 will be lifted clear of the ground. The means to provide for lifting the rear ends of the beams I6, I1, I8 and I9 simultaneously with the lifting of the rear ends of the beams 68, 69 and 10 will be presently referred to.

The beams I6, I1 are arranged forwardly Vof the beam 10. The beams I8, I9 are arranged forwardly of the beam 68. There is common to the beams I6, I1, 10 a telescopic element |40 arranged on one side of the tractor frame which functions when lever |05 is operated in a for ward direction to elevate the beams I6, I1 independently of beam 10 and when lever II3 is operated in a forward direction toelevate beams I6, I1 and 10 in unison. The element |40 (Figure 1l) Yincludes a front section |4I including a lower part |42 having a tubular rear portion |42a. The section |4| includes a vertical flange |43 on the top of part |42. The flange |43 is disposed lengthwise of and is of less length than part |42. The element |40 includes a rear section |44 which is pivotally connected at its rear end, as at |45, to the stem |46 of the lift member |32. The section |44 extends into the tubular rear portion of section I4I. The forward end of section |4| extends into the upper end of and is pivotally connected to lever 39. The element |40 includes a controlling spring |41 which is fixed at its rear end to the section I4I and at its forward end is attached to a tensioning means |48 therefor which is mounted in the cross piece 44 carried by lever 30. The arm |06a on lever |05 has its rear end slidably mounted in a rear cutout |49 in flange |43 which provides a shoulder |40a against. which the end |49b of arrnV |06a is adapted to abut to shift section I4I forwardly. The latter is shiftable independent of and in unison with section |44 as the latter when it is shifted forwardly abuts and carries section |4| therewith. The flange |43 is formed wthra cutout |50 which provides a shoulder I5I. The cutout |49 is arranged rearwardly of cutout |50. The arm ||4a which extends forwardly from ||3 has an angularly disposed forward end |52 (Figure 2) which rides in the cutout |50 and is adapted to abut shoulder I5|. When lever |05 is moved forwardly the arm |06a is carried in a like direction which shifts section |4| of element |40 forwardly and which in turn will move lever 39 in a direction to elevate the rear ends of beams I6', I1 and which action is had independently of a shift to beam 10.Y When lever I I3 is shifted forwardly the rear end of crank arm I I1 will be elevated lcarrying lifter bar 93 therewith which in turn will elevate the rear end of beam 10 and move the ground working devices carried thereby clear of the ground. As lever lisis moved forwardly the arm |I4' 1 carried thereby will abut shoulder |54 and cause the section |4I of element |40 to act on lever 30 in a manner to elevate the rear ends of the beams i6, |1 to move the ground working devices 26 clear of the ground.

The arrangement aforesaid will provide for lifting the ground working devices 26 independent of the ground working devices 90, 9| and for lifting these latter in unison with the device 26.

The other side of the traction frame is provided with a spring controlled telescopic element |52a of the same construction and arrangement as the element |40, functions for the same purpose as and is disposed in relation to beams I8, I9, 68, arms |06, II4, levers |04, |I2, as the element |04 is with respect to beams I6, |1, 10, arms I 06a, II41, levers |05, II2. Itis unnecessary to specifically set forth the construction and ar- -rangement of element |52, but to say that element |52St provides for independently lifting beams I8, I9 with respect to beam 68 and for lifting beams I8, |9 and 68 in unison. It will be stated that the rear section |53Y of element |52- is pivotally connected to the stem |54 of lift member I3| (Figure 4).

When the shaft |30 is moved in a direction to elevate the rear ends of lift members |3I, |32 and |33 to provide in connection with the lift rods 93, 95, 91 for the elevating of the rear ends of the beams 68, 69 and 10, the upper ends of the stems |46, |54 of the lift members |32, |30 move forwardly carrying the rear sections of the elements |40, |52a therewith in a like direction and which in turn will provide for the front sections of said elements to move forwardly acting on the levers 39, 40 in Va manner to provide for the elevating of the rear ends of beams I6, I1, I8 and I9 simultaneously with the rear ends of the beams 68, 69,

VThe beam 69 may, when desired, be elevated independently of any one of the other beams on the operation of the lever |20 forwardly and which will provide for crank arm ||6 in connection with bar 6'! to lift beam 68.

The means or mechanism for operating the shaft |30, to provide for simultaneously elevating all of the ground working devices clear of the ground, as well as for lowering in unison all of said devices, is of a type that is normally latched in inactive position and when actuated to operate shaftY |30 `for Vthe purpose referred to it is also latched in active position to maintain all of the ground working devices simultaneously in ground clearing position. The said means includes a housing |55 mounted on the tractor frame 2. Journaled in and extending through the housing |55 is a rotatable shaft |56 carrying a disc 51 at one end and a collar |58 at its other end. The disc |51 constitutes Va keeper for a latching member to be referred to. The shaft |56 carries a bevel gear |59 (Figures 4 and 5) which is arranged in housing |55. The disc |51 has formed in its edge a pair of diametrically aligned transverse grooves |599, |60 (Figure 15). Pivoted to the outer face of disc |51 eccentrically thereof, as at I6I is the forward end of a rearwardly extending angle-shaped operating rod |62 for the shaft |30. The latter is provided with a depending arm |63 to the lower end of which is anchored, as at |64 the base |65 of a horizontally disposed yoke |66 having its sides provided with aligned'openings I 61. The rod |62 includes a straight rearw stretch |68 and a forward stretch |69 which inclines upwardly from the forward end of stretch |68. The latter extends through the aligned openings |61 and is slidably mounted inthe yoke |66. The stretch |68 has xed thereto acollar |10 which is arranged in yoke |66. Positioned on stretch |68 and interposed between the collar |10 Vand the sides of yoke |66 is a pair of cushioning springs I 1|. Coacting with the recesses in the edge of the disc |51 is a spring controlled latching structure |12 consisting of an upstanding latching'rmember |13 pivotally connected at its lower end, as at |14 to a post |15. The member |13 has mounted thereon intermediate its ends a laterally disposed roller |16 for selectively seating in the grooves |599, |60. VWhen rollerV |16 is mounted in groove |596, the shaft |56 `and disc |51 are normally latched in inactive position. When roller |16 is mounted in groove |60, the shaft |56 and disc |51 are latched in active position. Therdisc |51 has its edge formed with a pair of spaced radially vdisposed.

studs |11, |18 arranged in proximity toonelside of grooves |59a, llilV respectively. The studs Ill,`

|18 are what may be termed stopscoacti'ng with the latching member |l|3 for stopping themovelatched at desired points. The upper end of the latter hasan angularly disposed part |19 constituting afoot tread to enable the member Y |13 to be shifted` forwardly to release roller -|15 from a groove. A controlling spring |88 i'sv providedfor lever Sl and which is anchored at one end to the tractor frame 2 and at its other end to lever |76. Rotatably supported by the tractor frame 2 lengthwise of the latter is amanually operated driving element (Figures l and 2) |8| for the shaft |56. The element |8| includes an elongated shaft |82 (Figures 4 and 5) which is of a length to extend from the front end'of tractor frame 2 to within housing |55. The inner end of shaft |82 carries a bevel pinionV |83 which meshes with the bevel gear |59. The outer end of shaft |82 is provided with a crank handle E84 to manually facilitate the rotation of shaft |82 in a manner to provide for the operation of shaft |58 in a direction to cause disc |51 to move clockwise whereby shaft |38 will be shifted anticlockwise to provide for the simultaneously ele- The yokes 54, 55 have their sides provided withV aligned openings |81 (Figure l) for adjusting the position of the shaft 61 vertically. The beams are termed carriers.

The ground kworking devices at the front of each side, whichfmay be termed front cultivators are readily removable owing to the manner in which such ground working devices are mounted.Y

The front cultivators may be equipped with knives or two plows or four plows and are readily elevated out of the way when planting or plowing middles.y Y

When cultivating there are three plows used behind the tractor for plowing out middles and at the same time plowing out the wheel tracks. When planting or cultivating where there are point rows, one row stopping, the other going on,

push levers H2, or ||3 clear over forward and raise all plows on that side out of the way so that the other row may be planted or plowed to its end.

When working terrace land, one side can be set to work the row on the side of the terrace and the lower row can be plowed equally as well.

'I'he back plows may be used several different Ways. For cultivating the three sweep plows are used, but the front endsy of beams are raised to the top holes in the sides for the upper. The said end of the beams will be above the growing crop. The plows are set in a. way so that they will plow out all of the wheel tracks and leave the ground loose.

In changing the plows for planting, the beam Y 68 is taken out and the beams 68, 18 are dropped and beams 68, 18 are to pivotallyj'support these latter. 1 f The beams'r, 18 have connected therewith resilient supports |88 which areconnected tothel outer sides of the vyokes, 54, 55 by tension adjusting means |89.-

What I claim is: l i. Aself-propelled agriculture machine-including a frame, a propelling means supported by the frame, front and Arear carriers for ground working devices at each side of the frame, means Yfor elevating and lowering a front carrier at of the carrier at the other side ofthe framefandVV means for simultaneously elevating and lowering' all of the said carriers. Y

' 2.,A self-propelled agriculture Ymachine includingfa frame,; apropelling means supported by the' frame, front'and rear carriers for' ground working devices at each side of the frame, means for elevating and lowering a front carrier at one side of the frame independent of the rear carrier at said side, means coacting with the said other means for elevating the front and rear carriers at one side of theframe independent of the carrier at the other side of the frame, a carrier for a ground working device arranged at the back of the frame disposed between the carriers at the rear of the sides of the frame, means for elevating and lowering said back carrier independent of the others of the carriers, and means for simultaneously elevating and lowering all of the carriers.

3. A self-propelled agriculture machine including a frame, a propelling means supported by the frame, front and rear carriers for ground working devices at each side of the frame, means for elevating and lowering a front carrier' at one side of the frame independent of the rear carrier at said side, means coacting with the said other means for elevating the front and rear carriers at one side of the frame independent of the carrier at the other side of the frame, means for simultaneously elevating and lowering all of the said carriers, and said last mentionedY means having coacting parts for normally latching it from operation and for latching it in active position.

4. A self-propelled agriculture machine including a frame, a propelling means supported by the frame, front and rear carriers for ground working devices at each side of the frame, means for elevating and lowering a front carrier at one side of the frame independent of the rear carrier at said side, means coacting with the said other means for elevating the front and rear carriers at one side of the frame independent of the carrier at the other side of the frame, a carrier for a ground Working device arranged at the back of the frame disposed between the carriers at the rear of the sides of the frame, means for elevating and lowering said back carrier independent of the others of the carriers, means for simultaneously elevating and lowering all of the carriers, andY said last mentioned means having coacting parts for normally latching it from operation and for latching it in active position.

5. The invention as set forth in claim` 1 having the rear carriers on both sides of the frame disposed in lengthwise relation with respect to the latter and provided with vertically adjustable pivoted forward ends.

Y 6. The invention as set forth in claim 3 having the rear carriers on both sides of the frame disposed in lengthwise relation with respect to the latter and provided with vertically adjustable pivoted forward ends. Y

7. The invention as set forth in claim 2 having the rear carriers on both sides of the sides of the frame and the said back carrier disposed in lengthwise relation with respect to the frame and provided with vertically adjustable forward ends.

8. The invention as set forth in claim Y4 having the rear carriers on both sides of the sides of the frame and the said back carrier disposed in lengthwise relation with respect to the frame and providedwith vertically adjustable forward ends. Y

9. The invention as set forth in claim 1 having the -rear carriers at both sides of said frame connected to the means for .elevating and loweringthem by lift bars and the carriers arranged at the rear of the sides of said frame connected to the means for simultaneously elevating and lowering all of the carriers by lift bars.

10. The invention as set forth in claim 2 having the carriers arranged at both sides of the frame and the Ysaid back carrier connected to the means forsirnultaneously elevating and lowering all of the carriers by lift bars.

11. The invention as set forth in claim 1 having the means for elevating and lowering the front carriers on a side of the frame including a telescopic element having one of its sections connected to the` means for simultaneously elevatng and lowering all of the carriers.

12. The invention as set forth in claim 2 having the means for elevating and lowering the front carriers on a side of the frame including a telescopic element having one of its sections connected to the means for simultaneously elevating and lowering all of the carriers.

MALCOLMEl D. DOUGLASS. 

